{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1881128",
    "entityType": "User",
    "nonce": "0xe861df5b9d0be98a84ab4af89b804fd68141c081fab80a54e22360d09f49ec52",
    "signature": "0x3479b3e6623881f143daf33a0a65129f5af60e2b5585e31fe7e6ab99d2ea7d760556b818ca64366d56ef1120baafe81b2207f10c1f296be2f756bb65821a0fb81b",
    "signer": "0x712Aca9aA6ac07F98dcEC338Be9C15c3Dc47d569",
    "userId": "12730129"
  }
}